为了重述我的案例，我想要让我的使用者巡览的一组使用自然阶层架构的文件。

To recap my scenario, I want to enable my users to navigate a set of articles using a natural hierarchy.

youdao

与此同时，工薪阶层的父母相信他们的孩子会自然而然地茁壮成长，给予他们更多的独立性和自由玩耍的时间。

Working-class parents, meanwhile, believe their children will naturally thrive, and give them far greater independence and time for free play.

youdao

今天这种极其显著的平均化——每个人的生存机会和子女数量都相同——意味着，与部落相比较，自然选择在印度中上阶层已经失去了80%的效力。

The grand mediocrity of today - everyone being the same in survival and number of offspring - means that natural selection has lost 80% of its power in upper middle class India compared to the tribes.

youdao